Firstly. Let me introduce myself. I'm a newcomer to this site. I have just acquired a Black Chev Lumina SS 6.0L - having waited many years to own one, in general. Hence name ('Blackbird' - as in SR-71 blackbird). To attempt to answer your question about the effects of removing your turbo from your 207, 1st check what the stated compression ratio of your car engine is (usually a low 8.8:1Ratio. Your glove compartment book will give you this info under 'engine specifications'. Generally, you'd have to replace conrods and piston-type to get back to decent compression ratios.